Flying Around the World Powered by the Sun

With the technology available today, powering an airplane with solar power doesn't make a whole lot of sense. But this isn't keeping people from trying. Bertrand Piccard and André Borschberg, specifically, are working to build a solar airplane that could circle the planet.Good writes:

It doesn't make good business sense, physics sense, or much of any kind of sense, to try to fly an airplane on solar power. Not yet. With the state of the technology, and how relatively young the solar sector still is, such an endeavor would be considered quixotic today--let alone in 2003, when Bertrand Piccard and André Borschberg, co-founders of Solar Impulse, announced they would design a solar-powered aircraft and fly it around the world.